Servo tension device used to confirm before matters 1, please check the porcelain eye Is it right? With Khan, crack, broken lines; 2, please check the felt Is it right? With Khan, felt a pressing spring elastic Is it right? Suitable; 3, please check the wire guide wheel, a damping plate and tension rod Is it right? Running freely; 4, please check the anti jumper is not the body sweat, broken lines, is not running freely. We understand the details please visit the company's official website: www.www.swlawyer.org.cn Source: www.www.swlawyer.org.cn (forward please specify forwarding source)